Spin-chain description of fractional quantum Hall states in the Jain series

Spin-polarization in Fractional Quantum Hall Effect

Experimental data show a number of plateaus of varying widths in the magnetic-field dependence of the electron-spin-polarization for fractional quantum Hall states. We have calculated the magnetic-field dependence of the spin-polarization using a new theory. We start by adopting the Landau gauge and ignoring Coulomb interactions between electrons; then we construct single electron states in equ...

Spin in fractional quantum Hall systems

A system at filling factor 2/3 could be a candidate for a quantum Hall ferromagnet at integer filling factor of composite fermions. Using exact diagonalization with electrons on a torus we study the transition from the singlet ground state to the polarized ground state at this filling and look for signatures of quantum Hall ferromagnetism. Differences between the fractional and corresponding in...

Edge reconstruction in fractional quantum Hall states

The nature of edge reconstruction in the quantumHall e ect (QHE) and the issue of where the current flows have been debated for years.Moreover, the recent observation of proliferation of ‘upstream’ neutral modes in the fractional QHE has raised doubts about the present models of edge channels. Here, we present a new picture of the edge reconstruction in two of the holeconjugate states. For exam...

Spin Peierls Effect in Spin Polarization of Fractional Quantum Hall States

Fractional quantum Hall states of Rydberg polaritons

Mohammad F. Maghrebi,1,2 Norman Y. Yao,3 Mohammad Hafezi,1,4 Thomas Pohl,5 Ofer Firstenberg,6 and Alexey V. Gorshkov1,2 1Joint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA 2Joint Center for Quantum Information and Computer Sceince, NIST/University of Maryland, College Park, Maryland 20742, USA 3Department of Physics, University of California, Berkeley, Calif...